List UI Policies for a table (field visibility, mandatory, read-only rules) (requires SCRIPTING_ENABLED=true)
AI agents call list_ui_policies to retrieve information from ServiceNow-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is fundamentally a Read operation—it retrieves UI policy configurations from ServiceNow without side effects. However, severity is elevated to 'medium' rather than 'low' because UI policies govern access control and field visibility rules; an attacker could enumerate these policies to identify security controls, find injectable fields, or understand data access restrictions before attempting privilege…
From the tool's definition Tool description explicitly states "List UI Policies" with read-only operations (field visibility, mandatory, read-only rules). The tool retrieves configuration data without modifying it.
Attacks that exploit this kind of access
List UI Policies for a table (field visibility, mandatory, read-only rules) (requires SCRIPTING_ENABLED=true). It is categorised as a Read tool in the ServiceNow-MCP MCP Server, which means it retrieves data without modifying state.
Register the ServiceNow- MCP server in PolicyLayer and add a rule for list_ui_policies: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches ServiceNow-MCP. Nothing to install.
list_ui_policies is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_ui_policies rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_ui_policies. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_ui_policies is provided by the ServiceNow- MCP server (tedorigawa001/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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